Wondering how many calories are in an ounce of cornmeal? This calculator converts any weight — ounces or grams — into calories using USDA nutrition data for common cornmeal varieties, including degermed yellow and white cornmeal, whole-grain cornmeal, self-rising mixes, and cooked polenta. It uses the standard 28.35-gram ounce and calorie densities for both dry and cooked forms.
Calorie trackers, meal planners, and home bakers can use it to portion out cornbread, polenta, and cornmeal muffins with confidence. Just pick the cornmeal type, enter the amount, and get an instant per-ounce and total calorie count. The serving-size presets make it easy if you are cooking from cup-based recipes.
The tool also shows a step-by-step breakdown so you can see exactly how the math works — useful for logging food in apps, planning macros, or checking nutrition labels against real-world values.
Estimates based on USDA FoodData Central values; actual nutrition varies by brand and preparation.
How to Use This Tool
Using the cornmeal calorie per ounce calculator only takes a few steps:
- Choose the cornmeal type that matches what you're measuring. The dropdown includes regular degermed yellow and white cornmeal, whole-grain cornmeal, self-rising cornmeal mix, and cooked cornmeal mush or polenta.
- Enter the amount in either ounces or grams. If you're following a recipe that calls for cups, use the quick preset buttons — 1/4 cup of dry cornmeal weighs about 1.1 oz, and 1/2 cup weighs about 2.2 oz, though it's always more accurate to weigh your ingredient.
- Set the number of servings or batches. This is handy when you're making a double batch of cornbread and want the total calorie count for the entire recipe.
- Click "Calculate Calories" to see the per-ounce value, the total calories for the amount you entered, and a full breakdown of the math.
If you're also tracking other corn dishes, the corn calorie calculator can help with whole kernel corn, while this tool is specific to dry cornmeal and polenta.
How the Calculation Works
Cornmeal calories are calculated from the food's calorie density, usually expressed as kilocalories per 100 grams. The USDA FoodData Central database lists dry degermed cornmeal at about 361 kcal per 100 grams, and whole-grain cornmeal at the same value because both are mostly starch with a small amount of protein and fat. Self-rising cornmeal mixes are slightly lower at around 348 kcal per 100 grams because they contain leavening agents and salt. Cooked cornmeal mush or polenta is much lower, around 71 kcal per 100 grams, because it is mostly water after cooking.
Calories = (weight in grams ÷ 100) × kcal per 100 g
To convert ounces to grams: grams = ounces × 28.3495
To find calories per ounce directly: kcal per oz = (kcal per 100 g × 28.3495) ÷ 100
For example, regular yellow cornmeal at 361 kcal per 100 g provides about 102 kcal in a single 1-ounce serving. Entering 1.5 ounces gives 42.5 grams, which works out to about 153 kcal. The tool does all of this automatically, but showing the steps makes it easier to trust your food log.
Worked Examples
Example 1: 2 ounces of whole-grain cornmeal
Grams = 2 × 28.3495 = 56.7 g
Calories = (56.7 ÷ 100) × 361 = 204.7 kcal
Per-ounce calories = (361 × 28.3495) ÷ 100 = 102.3 kcal
Example 2: 150 grams of self-rising cornmeal mix
Calories = (150 ÷ 100) × 348 = 522 kcal
Per-ounce calories = (348 × 28.3495) ÷ 100 = 98.7 kcal
Example 3: 1 cup of cooked polenta, split into 2 servings
A cup of cooked polenta weighs roughly 240 g, but this calculator allows you to enter weight directly. If you enter 120 g per serving at 71 kcal per 100 g: calories per serving = (120 ÷ 100) × 71 = 85.2 kcal. Two servings = 170.4 kcal total.
Reference Table: Calories in Common Cornmeal Types
Values below are based on USDA FoodData Central averages for uncooked dry ingredients unless marked otherwise.
| Cornmeal Type | kcal per 100 g | kcal per 1 oz |
|---|---|---|
| Yellow cornmeal, degermed (dry) | 361 | ≈102 |
| White cornmeal, degermed (dry) | 361 | ≈102 |
| Whole-grain cornmeal (dry) | 361 | ≈102 |
| Self-rising cornmeal mix (dry) | 348 | ≈99 |
| Cooked cornmeal mush / polenta | 71 | ≈20 |
Always scan the nutrition label on your package. Stone-ground and bolted cornmeals can vary slightly in calorie density based on how much of the bran and germ are retained. If you're interested in the carbohydrate side of corn, see the corn carbs per 100g calculator for more macro detail.
Factors Affecting Accuracy
A few things can make your cornmeal count differ from the calculator's result:
- Brand and grind: Fine versus coarse grind doesn't change calories for the same weight, but stone-ground cornmeal may retain more of the germ, which contains fat and therefore slightly more calories per gram.
- Moisture: Dry cornmeal in a humid kitchen can absorb moisture from the air, making a cup weigh a little more while providing slightly fewer calories per gram. Measuring by weight removes this uncertainty.
- Added ingredients: Self-rising mixes contain baking powder and salt, so their calorie density is lower per gram. Flavored cornmeal mixes with cheese, sugar, or dried peppers will have different values.
- Cooked versus raw: Cooking with water adds mass without adding calories, which is why cooked polenta has a much lower calorie density than dry cornmeal. Never substitute a cooked weight into the dry calorie value.
Pro tip: For meal prep, weigh your cornmeal dry before cooking, even if you plan to eat it as polenta or mush. The dry weight gives you the calorie number that stays constant after water is absorbed.
Frequently Asked Questions
How many calories are in one ounce of cornmeal?
Dry degermed and whole-grain cornmeal provide about 102 calories per ounce. Self-rising cornmeal mix provides about 99 calories per ounce, and cooked polenta provides only about 20 calories per ounce because of its high water content.
Is cornmeal healthy for weight loss?
Cornmeal is calorie-dense when dry, so portion control matters. Whole-grain cornmeal also supplies fiber, B vitamins, and minerals. Pairing a sensible portion with protein and vegetables makes it easier to fit into a balanced diet. A serving of 1–2 ounces is a reasonable starting point.
Why do some nutrition labels show different numbers?
Brands can use different corn varieties, milling methods, and enrichment levels. The USDA values used in this calculator are national averages, so your package may differ by a few calories per serving. Always defer to the label when you have one.
Can I use this calculator for masa harina or corn flour?
Masa harina and corn flour have calorie densities close to cornmeal, but they are not identical. For the most accurate tracking, check the package nutrition panel. If you're tracking whole kernel corn, try the corn calories per cup calculator instead.